| Regimental number | 1706 |
| Place of birth | Zeehan Tasmania |
| Religion | Church of England |
| Occupation | Labourer |
| Address | Derby, Tasmania |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Father, John Pennington, Derby, Tasmania |
| Enlistment date | 31 August 1915 |
| Rank on enlistment | Private |
| Unit name | 3rd Light Horse Regiment, 12th Reinforcement |
| AWM Embarkation Roll number | 10/8/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A40 Ceramic on 23 November 1915 |
| Rank from Nominal Roll | Gunner |
| Unit from Nominal Roll | 1st Divisional Ammunition Column |
| Fate | Returned to Australia 28 September 1919 |
| Family/military connections | Brother: 1860 Pte Cyril John PENNINGTON, 12th Bn, returned to Australia, 9 March 1919. |
| Date of death | 2 September 1945 |
| Place of burial | Carr Villa Cemetery |